The sprayers are made by Fimco. I have one with the boomless sprayer that I purchased last season that has been great. I mow my local TSC store so I try to buy as many products that I need from them as possible. However, the handtools such as rakes, shovels, etc have flimsy handles. My employees or I have broken the handles on just about all of them. To me the Jackson and Rigid brand hand tools are the best in my experience.
As far as chemicals I buy in bulk from a local chemical company so I don't know about the TSC chemicals.